#bn{
    text-align: center;
    width: 80%;
    margin: 0 auto;
}
#mav{
    font: 36px/2em 楷体;
    background: lightblue;
}
#bread{
    border-bottom: 1px black dotted;
    padding: 3px;
    text-align: left;
}
h1{
    font:36px/2em 黑体;
}
h2{
    width:60%;border-bottom:1px black solid;margin:40px auto 20px;
}
a{
    text-decoration:none;
}
a:hover{
    text-decoration:underline; 
    color:red;
} 
.banner{
    width:850px;
    height:320px;
}
.lastline{ 
    margin-bottom:2em; 
}
.pics{ 
      width:350px;
      height:515px;
      margin:8px;
}
.intro{ 
     font:18px/1.5em 宋体; 
     width:60%;
     margin:20px auto; 
     text-align:left;
}